Patent GB-191504848-A (GB)
Title: Improvements in Feed Apparatus for Printing Presses and similar Machines.
IPC: B65H9/06
Filed: 1915-03-29
Abstract: 4848. Marks, E. C. R., [Stokes & Smith Co.]. March 29. Pile supports for sheet feeds; registering- devices; separators; carriers; guides.-Apparatus for feeding sheets or blanks to printing and like machines is constructed with a bodilymovable separating and feeding device which may be set in one position to feed the sheets &c. to the machine direct, or in another position to feed through a sheet-registering device movable into and out of operable position. As applied to a printing-machine with forme cylinder 11, impression cylinder 12 with grippers, and taking-off cylinder 13, the feed-apparatus is constructed with a frame 15 adapted to be placed in the position shown in Fig. 3 for direct feeding, and in the position shown in Fig. 1 for feeding through a registering-device, the frame having for this purpose depending rear legs 18 which can be supported in sockets 19 or 20, and being supported at its front end on pivoted links 16. The pile of sheets 36 is supported between adjustable side guides 37 and against an adjustable end guide 48 on a plate 24, which is reciprocated in the frame 15 through link 251 and lever 26 by a telescopically adjustable rod 27, to provide for the two positions of the frame, from a crank-pin 35 on a disk 29 secured, with provision for angular adjustment by a worm 32, on the shaft of the forme cylinder. The side guides 37 are slidably adjustable in brackets 38, which are themselves adjustably attached to the plate 24 by pins 39, 42 engaging a series of holes and locked by mounting the pin 42 on the bracket so that it can be jammed against the side of the hole. The front end of the pile extends beyond the plate 24 and is supported on tapes 51 extending from the plate round a suction separating-roll 53 and a stationary guide-roll 54 to springs 55. As the plate moves forward, the lowest sheet is separated by the roll 53, driven by a rack on the plate, and directed between this roll and a guide 59 to a continuously-driven roll 62 and coacting roll 61, which feed it to the impression cylinder, the remainder of the pile riding on the flat top of the guide 59, which is adjustable in a cross-head 69 on the frame 15 by the milled head 70 of the adjusting-screw engaging a slot in the tail of the guide. A yielding pivoted finger 66 acts against the front edge of the advancing pile to prevent displacement. The roller 62 is concentric with one pivot of the links 16 and carries a bevel-wheel 63 driven through a shaft 65, carried by a link 16, from a bevel-wheel 64 on the other pivot, the wheel 64 being driven from the cylinder 13, which is driven from the cylinder 11. When the sheets are to be registered, the frame 15 is rocked on the links 16, and the legs 18 transferred to the recesses 20, and the frame 73 of the registering- device, which is connected by a pivot 74 to the frame 15, is turned over so that the screws 75 rest on the printing-machine frame, as shown in Fig. 1. The rollers 62, 61 then deliver the sheets to driven tapes 77, which convey thern below coacting-rolls 84 and a braking-device comprising spring-pressed balls 99, to adjustable stops 89 on brackets 96 fixed on a shaft 97, which is rocked at the required times to raise the stops by a spring when a cam on the shaft 127, acting through levers and links 115, 118. 119, permits. Prior to the raising of the stops, the sheets are moved transversely against a lateral fence by a lug on a transverse bar reciprocated for this purpose by a spring when a cam acting through levers and links 107, 109, 111 permits. The cams are adjustable angularly to adjust the timing. Curved guide-shoes 135 direct the registered sheet to the impression cylinder.